Showa Denko said today that it has increased production of high-purity ammonia at its subsidiary in Zhenjiang Province, China, earlier this year and has begun shipping product in tank containers, in addition to conventional shipments by cylinder, to meet rising demand from customers. Separately, in Taiwan and Singapore, the company expanded high-purity-gas stockpiling warehouses at its distribution bases at the end of last year. This expansion will enable the company to build up high-purity gas sales in East Asia and the Asean region. The company has also...